• Login
    View Item 
    •   NWU-IR Home
    • Research Output
    • Faculty of Natural and Agricultural Sciences
    • View Item
    •   NWU-IR Home
    • Research Output
    • Faculty of Natural and Agricultural Sciences
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    HESS upper limit on the very high energy γ-ray emission from the globular cluster 47 Tucanae

    Thumbnail
    View/Open
    2009Hessupperlimit aa11564-08.pdf (150.0Kb)
    Date
    2009
    Author
    Aharonian, F.
    Holleran, M.
    Büsching, I.
    Davids, I.D.
    De Jager, O.C.
    Raubenheimer, B.C.
    Venter, C.
    H.E.S.S. Collaboration
    Metadata
    Show full item record
    Abstract
    Observations of the globular cluster 47 Tucanae (NGC 104), which contains at least 23 ms pulsars, were performed with the HESS telescope system. The observations lead to an upper limit of F(E > 800 GeV) < 6.7 × 10−13 cm−2 s−1 on the integral -ray photon flux from 47 Tucanae. Considering millisecond pulsars as the unique potential source of -rays in the globular cluster, constraints based on emission models are derived: on the magnetic field in the average pulsar nebula and on the conversion efficiency of spin-down power to γ -ray photons or to relativistic leptons.
    URI
    http://hdl.handle.net/10394/10473
    https://doi.org/10.1051/0004-6361/200811564
    http://www.aanda.org/articles/aa/pdf/2009/19/aa11564-08.pdf
    Collections
    • Faculty of Natural and Agricultural Sciences [4781]

    Copyright © North-West University
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of NWU-IR Communities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Copyright © North-West University
    Contact Us | Send Feedback
    Theme by 
    Atmire NV